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« Back PDF (Print) 0.380 in. / 9.65 mm OD Toroid

MS - 039 125 - 8

Physical Dimensions
OD Bare Core Nominal 9.65 mm 0.380 in
Coated Core (max) 10.29 mm 0.405 in
ID Bare Core Nominal 4.78 mm 0.188 in
Coated Core (min) 4.27 mm 0.168 in
Ht Bare Core Nominal 3.18 mm 0.125 in
Coated Core (max) 3.81 mm 0.150 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 0.0752 cm2
Le Effective Magnetic Path Length 2.18 cm 
Ve Effective Core Volume 0.164 cm3
WA Minimum Effective Window Area 0.143 cm2
SA Surface Area 3.61 cm2
MLT Mean Length Per Turn 1.58 cm 
Permeability Part Numbers
Reference
Permeability
AL Value
(nH/N2)
MS
Sendust
SH
High Freq. Sendust
MPP
Molypermalloy
FluxSan
Silicon Iron
Hi-Flux
Nickle Iron
Optilloy
Optimized Alloy
14μ 6 MS-039014-8 MP-039014-8 FS-039014-8 HF-039014-8 OP-039014-8
26μ 11 MS-039026-8 SH-039026-8 MP-039026-8 FS-039026-8 HF-039026-8 OP-039026-8
40μ 17 MS-039040-8 FS-039040-8 OP-039040-8
60μ 25 MS-039060-8 SH-039060-8 MP-039060-8 FS-039060-8 HF-039060-8 OP-039060-8
75μ 32 MS-039075-8 FS-039075-8 OP-039075-8
90μ 38 MS-039090-8 FS-039090-8 OP-039090-8
125μ 53 MS-039125-8 SH-039125-8 MP-039125-8 HF-039125-8 OP-039125-8
147μ 63 MS-039147-8 MP-039147-8 HF-039147-8
160μ 68 MS-039160-8 MP-039160-8 HF-039160-8
173μ 74 MP-039173-8
205μ 84 MP-039205-8
Approx Unit Weight: 0.95 g 0.92 g 1.2 g 1.1 g 1.1 g 1.1 g
Test Conditions
Winding N=45, #30 AWG
Frequency 10 kHz
Voltage 0.015 V
AL Tolerance ±8% (±12% Super-MSS)
Coating/Packaging Information
Coating Type Parylene N
Voltage Breakdown 500 Vrms
Unit 0.1 mA, 5 s
Package Quantity 10,800 Pcs/Box
Winding Table
Wire Size AWG 20 22 24 26 28 30 32 34 36 38 40
mm 0.800 0.630 0.500 0.400 0.315 0.250 0.200 0.160 0.125 0.100 0.080
Single
Layer
Turns 11 14 18 23 29 37 47 59 74 93 116
Rdc(Ω) 5.8 m 11.7 m 23.9 m 48.6 m 97.4 m 197.6 m 399.2 m 796.9 m 1.6 3.2 6.3
Full
Winding
Turns 10 16 25 38 59 92 142 219 339 525 813
Rdc(Ω) 5.2 m 13.4 m 33.2 m 80.2 m 198.1 m 491.3 m 1.2 3.0 7.3 17.9 44.2